2022
Photochemistry of (Z)-Isovinylneoxanthobilirubic Acid Methyl Ester, a Bilirubin Dipyrrinone Subunit: Femtosecond Transient Absorption and Stimulated Raman Emission Spectroscopy
MADEA, Dominik; Taufiqueahmed Pirsaheb MUJAWAR; Aleš DVOŘÁK; Kateřina POSPÍŠILOVÁ; Lucie MUCHOVÁ et al.Základní údaje
Originální název
Photochemistry of (Z)-Isovinylneoxanthobilirubic Acid Methyl Ester, a Bilirubin Dipyrrinone Subunit: Femtosecond Transient Absorption and Stimulated Raman Emission Spectroscopy
Autoři
MADEA, Dominik; Taufiqueahmed Pirsaheb MUJAWAR; Aleš DVOŘÁK; Kateřina POSPÍŠILOVÁ; Lucie MUCHOVÁ; Petra ČUBÁKOVÁ; Miroslav KLOZ; Jakub ŠVENDA; Libor VÍTEK a Petr KLÁN
Vydání
Journal of Organic Chemistry, American Chemical Society, 2022, 0022-3263
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10401 Organic chemistry
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 3.600
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14310/22:00126178
Organizační jednotka
Přírodovědecká fakulta
UT WoS
EID Scopus
Klíčová slova anglicky
Alcohols; Molecular structure; Photooxidation; Quantum mechanics; Quantum yield
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 13. 6. 2025 10:41, Mgr. Michaela Hylsová, Ph.D.
Anotace
V originále
Bilirubin (BR) is an essential metabolite formed by the catabolism of heme. Phototherapy with blue-green light can be applied to reduce high concentrations of BR in blood and is used especially in the neonatal period. In this work, we studied the photochemistry of (Z)-isovinylneoxanthobilirubic acid methyl ester, a dipyrrinone subunit of BR, by steady-state absorption, femtosecond transient absorption, and stimulated Raman spectroscopies. Both the (Z)- and (E)-configurational isomers of isovinylneoxanthobilirubic acid undergo wavelength-dependent and reversible photoisomerization. The isomerization from the excited singlet state is ultrafast (the lifetimes of (Z)- and (E)-isomers were found to be similar to 0.9 and 0.1 ps, respectively), and its efficiencies increase with increased photon energy. In addition, we studied sensitized photooxidation of the dipyrrinone subunit by singlet oxygen that leads to the formation of propentdyopents. Biological activities of these compounds, namely, effects on the superoxide production, lipoperoxidation, and tricarboxylic acid cycle metabolism, were also studied. Finally, different photochemical and biological properties of this BR subunit and its structural analogue, (Z)-vinylneoxanthobilirubic acid methyl ester, studied before, are discussed.
Návaznosti
| EF16_025/0007381, projekt VaV |
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| EF17_043/0009632, projekt VaV |
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| NV18-07-00342, projekt VaV |
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| 90121, velká výzkumná infrastruktura |
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